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20" Onfloor Walkbehind Floor Grinders

  • Multi-surface planetary concrete floor grinder, concrete floor polisher that is equipped with Onfloor’s patented triple-belt planetary technology and flexible tool plates. 

    The 20" diameter grinder is light enough to tackle wood sanding and powerful enough to grind concrete a high efficiency. Able to reach 450-550 sqft / hr of production speed on concrete, this is the ideal machines for professional polishers.

    Diamond tooling available at: ( Metals / Hybrids / Ceramics / Resins )

    Other sizes of grinders available at: ( 9 Inch 16 Inch / 30 Inch )


      20" Diameter (Single Speed)

      20" Diameter (Variable Speed)

      Motor/Power: 5 HP/ 208-240V  5 HP/ 208-240V
      Full Load Amperage: 23 26
      Vacuum Port: 1.5" / 2" 1.5" / 2"
      Minimum CFM: 180 180
      Weight: 190 lbs 210 lbs
      • Fast Shipping: We will dispatch all items on same or the next business day. Our cutoff time is M-F 3:30 PM Pacific time.
      • Free Return: If your item is faulty or we have sent you something different to what you ordered, return it to us in the original packaging within 30 days and we will give you a replacement or a full refund. (Shipping cost not refunded)
      • Payment Safety: All transactions are SSL-protected and guaranteed safe.
      • Your Privacy: We will never share your information with anyone.
    When will my order arrive?
    Expedited shipping available at checkout.
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    Diameter Type Model Price Quantity
    info20" Grinder Single Speed 1,250 RPM $7,495.00
    info20" Grinder Variable Speed 0-1,750 RPM $9,995.00
    info20" Necessary Accessories Dust Skirt $71.50
    info20" Necessary Accessories Belt (Set of 3) $82.00
    info20" Necessary Accessories 28lb Weight $298.38
    info20" Necessary Accessories Adapter Plates (Set of 3) $354.53
    info20" Replacement Accessories White Grommet (24 Pack) $44.00
    info20" Replacement Accessories Accessory Pin (12 Pack) $108.63

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    Local pick up only. Please call (626)-656-5982 to set up a local pick up.

    An item over $1500 is required for financing.

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